/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:50:58,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:50:58,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 07:50:58,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:50:58,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:50:58,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:50:58,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:50:58,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:50:58,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:50:58,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:50:58,913 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:50:58,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:50:58,913 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:50:58,914 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:50:58,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:50:58,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:50:58,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:50:58,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:50:58,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:50:58,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:50:58,916 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:50:58,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:50:58,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:50:58,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:50:58,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:50:58,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:50:58,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:50:58,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:50:58,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:50:58,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:50:58,918 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:50:59,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:50:59,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:50:59,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:50:59,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:50:59,168 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:50:59,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2023-08-27 07:51:00,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:51:00,268 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:51:00,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2023-08-27 07:51:00,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63653244b/ad9eb43882ff44158e7969b386750158/FLAGb1434b825 [2023-08-27 07:51:00,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63653244b/ad9eb43882ff44158e7969b386750158 [2023-08-27 07:51:00,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:51:00,286 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:51:00,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:51:00,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:51:00,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:51:00,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ab063d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00, skipping insertion in model container [2023-08-27 07:51:00,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,303 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:51:00,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:51:00,419 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:51:00,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:51:00,444 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:51:00,444 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:51:00,456 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:51:00,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00 WrapperNode [2023-08-27 07:51:00,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:51:00,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:51:00,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:51:00,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:51:00,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,502 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 210 [2023-08-27 07:51:00,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:51:00,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:51:00,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:51:00,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:51:00,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:51:00,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:51:00,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:51:00,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:51:00,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (1/1) ... [2023-08-27 07:51:00,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:51:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:00,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 07:51:00,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 07:51:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:51:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:51:00,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:51:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:51:00,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:51:00,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:51:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:51:00,595 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:51:00,690 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:51:00,691 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:51:00,924 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:51:00,985 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:51:00,986 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 07:51:00,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:00 BoogieIcfgContainer [2023-08-27 07:51:00,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:51:00,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:51:00,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:51:00,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:51:00,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:51:00" (1/3) ... [2023-08-27 07:51:00,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad16df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:00, skipping insertion in model container [2023-08-27 07:51:00,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:00" (2/3) ... [2023-08-27 07:51:00,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad16df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:00, skipping insertion in model container [2023-08-27 07:51:00,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:00" (3/3) ... [2023-08-27 07:51:00,992 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2023-08-27 07:51:01,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:51:01,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 07:51:01,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:51:01,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 07:51:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 195 transitions, 406 flow [2023-08-27 07:51:01,144 INFO L124 PetriNetUnfolderBase]: 15/193 cut-off events. [2023-08-27 07:51:01,145 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 07:51:01,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 15/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2023-08-27 07:51:01,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 195 transitions, 406 flow [2023-08-27 07:51:01,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 184 transitions, 380 flow [2023-08-27 07:51:01,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:51:01,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 184 transitions, 380 flow [2023-08-27 07:51:01,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 184 transitions, 380 flow [2023-08-27 07:51:01,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 184 transitions, 380 flow [2023-08-27 07:51:01,210 INFO L124 PetriNetUnfolderBase]: 15/184 cut-off events. [2023-08-27 07:51:01,211 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 07:51:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 15/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 159 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 157. Up to 2 conditions per place. [2023-08-27 07:51:01,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2023-08-27 07:51:06,181 INFO L134 LiptonReduction]: Checked pairs total: 1791 [2023-08-27 07:51:06,181 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-27 07:51:06,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:51:06,194 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@309be76a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:51:06,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 07:51:06,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:51:06,196 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:51:06,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:51:06,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:06,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:51:06,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:06,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash 25974, now seen corresponding path program 1 times [2023-08-27 07:51:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798892057] [2023-08-27 07:51:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:06,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:06,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798892057] [2023-08-27 07:51:06,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798892057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:06,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:06,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:06,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715749455] [2023-08-27 07:51:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:06,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2023-08-27 07:51:06,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:06,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2023-08-27 07:51:06,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:06,479 INFO L124 PetriNetUnfolderBase]: 121/224 cut-off events. [2023-08-27 07:51:06,479 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 07:51:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 224 events. 121/224 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 929 event pairs, 93 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 396. Up to 214 conditions per place. [2023-08-27 07:51:06,481 INFO L140 encePairwiseOnDemand]: 379/390 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-27 07:51:06,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-08-27 07:51:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-27 07:51:06,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-08-27 07:51:06,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-27 07:51:06,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-27 07:51:06,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:06,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-27 07:51:06,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,502 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 78 flow. Second operand 3 states and 504 transitions. [2023-08-27 07:51:06,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-08-27 07:51:06,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 07:51:06,505 INFO L231 Difference]: Finished difference. Result has 33 places, 35 transitions, 110 flow [2023-08-27 07:51:06,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=35} [2023-08-27 07:51:06,508 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-27 07:51:06,508 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 35 transitions, 110 flow [2023-08-27 07:51:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:06,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:51:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:51:06,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:06,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 806740, now seen corresponding path program 1 times [2023-08-27 07:51:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024916789] [2023-08-27 07:51:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024916789] [2023-08-27 07:51:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024916789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375615857] [2023-08-27 07:51:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:06,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:06,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:06,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 07:51:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:06,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:51:06,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:06,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:51:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375615857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:06,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:51:06,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 07:51:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850039995] [2023-08-27 07:51:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:06,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:51:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:51:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:51:06,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2023-08-27 07:51:06,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:06,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2023-08-27 07:51:06,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:06,775 INFO L124 PetriNetUnfolderBase]: 121/222 cut-off events. [2023-08-27 07:51:06,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:51:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 222 events. 121/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 934 event pairs, 93 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 423. Up to 206 conditions per place. [2023-08-27 07:51:06,779 INFO L140 encePairwiseOnDemand]: 383/390 looper letters, 25 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-27 07:51:06,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 164 flow [2023-08-27 07:51:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:51:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:51:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-08-27 07:51:06,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185897435897436 [2023-08-27 07:51:06,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-08-27 07:51:06,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-08-27 07:51:06,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:06,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-08-27 07:51:06,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,787 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 110 flow. Second operand 4 states and 653 transitions. [2023-08-27 07:51:06,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 164 flow [2023-08-27 07:51:06,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:06,789 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 104 flow [2023-08-27 07:51:06,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-08-27 07:51:06,789 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2023-08-27 07:51:06,789 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 104 flow [2023-08-27 07:51:06,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:06,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:06,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:51:06,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:06,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:06,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 806767, now seen corresponding path program 1 times [2023-08-27 07:51:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425659399] [2023-08-27 07:51:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425659399] [2023-08-27 07:51:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425659399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298588193] [2023-08-27 07:51:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:07,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:07,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:07,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 07:51:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:07,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:51:07,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:07,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:07,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298588193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:07,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:07,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 07:51:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534447229] [2023-08-27 07:51:07,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:51:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:51:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:51:07,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2023-08-27 07:51:07,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:07,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2023-08-27 07:51:07,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:07,269 INFO L124 PetriNetUnfolderBase]: 127/234 cut-off events. [2023-08-27 07:51:07,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:51:07,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 234 events. 127/234 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 967 event pairs, 93 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 423. Up to 215 conditions per place. [2023-08-27 07:51:07,270 INFO L140 encePairwiseOnDemand]: 383/390 looper letters, 26 selfloop transitions, 17 changer transitions 0/45 dead transitions. [2023-08-27 07:51:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 250 flow [2023-08-27 07:51:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:51:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:51:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2023-08-27 07:51:07,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183760683760684 [2023-08-27 07:51:07,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 979 transitions. [2023-08-27 07:51:07,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 979 transitions. [2023-08-27 07:51:07,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:07,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 979 transitions. [2023-08-27 07:51:07,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,278 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,278 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 104 flow. Second operand 6 states and 979 transitions. [2023-08-27 07:51:07,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 250 flow [2023-08-27 07:51:07,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:07,279 INFO L231 Difference]: Finished difference. Result has 38 places, 45 transitions, 220 flow [2023-08-27 07:51:07,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=38, PETRI_TRANSITIONS=45} [2023-08-27 07:51:07,280 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 07:51:07,280 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 45 transitions, 220 flow [2023-08-27 07:51:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:07,281 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:51:07,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:07,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-27 07:51:07,485 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:07,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1734677231, now seen corresponding path program 2 times [2023-08-27 07:51:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573945257] [2023-08-27 07:51:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:07,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573945257] [2023-08-27 07:51:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573945257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988785505] [2023-08-27 07:51:07,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:51:07,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:07,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:07,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 07:51:07,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:51:07,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:07,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:51:07,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 07:51:07,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:51:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988785505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:07,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:51:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:51:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686371998] [2023-08-27 07:51:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:07,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:51:07,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 390 [2023-08-27 07:51:07,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:07,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 390 [2023-08-27 07:51:07,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:07,650 INFO L124 PetriNetUnfolderBase]: 127/233 cut-off events. [2023-08-27 07:51:07,650 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 07:51:07,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 233 events. 127/233 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 958 event pairs, 93 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 474. Up to 220 conditions per place. [2023-08-27 07:51:07,651 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 36 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-08-27 07:51:07,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 294 flow [2023-08-27 07:51:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-27 07:51:07,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256410256410256 [2023-08-27 07:51:07,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-27 07:51:07,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-27 07:51:07,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:07,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-27 07:51:07,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,665 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 220 flow. Second operand 3 states and 498 transitions. [2023-08-27 07:51:07,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 294 flow [2023-08-27 07:51:07,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 268 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:07,670 INFO L231 Difference]: Finished difference. Result has 38 places, 44 transitions, 196 flow [2023-08-27 07:51:07,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=38, PETRI_TRANSITIONS=44} [2023-08-27 07:51:07,671 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 07:51:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 196 flow [2023-08-27 07:51:07,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:07,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:51:07,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:07,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:07,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1721477912, now seen corresponding path program 1 times [2023-08-27 07:51:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396941293] [2023-08-27 07:51:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:07,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396941293] [2023-08-27 07:51:07,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396941293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:07,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:07,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119688298] [2023-08-27 07:51:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:07,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 390 [2023-08-27 07:51:07,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:07,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:07,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 390 [2023-08-27 07:51:07,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:08,007 INFO L124 PetriNetUnfolderBase]: 293/497 cut-off events. [2023-08-27 07:51:08,007 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 07:51:08,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 497 events. 293/497 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1956 event pairs, 87 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 1013. Up to 279 conditions per place. [2023-08-27 07:51:08,009 INFO L140 encePairwiseOnDemand]: 386/390 looper letters, 61 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-27 07:51:08,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 363 flow [2023-08-27 07:51:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-08-27 07:51:08,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623931623931624 [2023-08-27 07:51:08,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-08-27 07:51:08,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-08-27 07:51:08,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:08,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-08-27 07:51:08,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,014 INFO L175 Difference]: Start difference. First operand has 38 places, 44 transitions, 196 flow. Second operand 3 states and 541 transitions. [2023-08-27 07:51:08,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 363 flow [2023-08-27 07:51:08,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:08,016 INFO L231 Difference]: Finished difference. Result has 39 places, 45 transitions, 198 flow [2023-08-27 07:51:08,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2023-08-27 07:51:08,016 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-27 07:51:08,016 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 198 flow [2023-08-27 07:51:08,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:08,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:51:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 07:51:08,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:08,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1721481294, now seen corresponding path program 1 times [2023-08-27 07:51:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:08,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905133201] [2023-08-27 07:51:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:08,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:08,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905133201] [2023-08-27 07:51:08,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905133201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:08,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:51:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692697368] [2023-08-27 07:51:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:08,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:51:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:51:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:51:08,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 390 [2023-08-27 07:51:08,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:08,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 390 [2023-08-27 07:51:08,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:08,192 INFO L124 PetriNetUnfolderBase]: 284/543 cut-off events. [2023-08-27 07:51:08,192 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 07:51:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 543 events. 284/543 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2926 event pairs, 230 based on Foata normal form. 12/371 useless extension candidates. Maximal degree in co-relation 1180. Up to 382 conditions per place. [2023-08-27 07:51:08,195 INFO L140 encePairwiseOnDemand]: 381/390 looper letters, 64 selfloop transitions, 5 changer transitions 1/72 dead transitions. [2023-08-27 07:51:08,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 453 flow [2023-08-27 07:51:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:51:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:51:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 772 transitions. [2023-08-27 07:51:08,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958974358974359 [2023-08-27 07:51:08,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 772 transitions. [2023-08-27 07:51:08,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 772 transitions. [2023-08-27 07:51:08,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:08,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 772 transitions. [2023-08-27 07:51:08,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.4) internal successors, (772), 5 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,200 INFO L175 Difference]: Start difference. First operand has 39 places, 45 transitions, 198 flow. Second operand 5 states and 772 transitions. [2023-08-27 07:51:08,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 453 flow [2023-08-27 07:51:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:08,202 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 235 flow [2023-08-27 07:51:08,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-27 07:51:08,202 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-27 07:51:08,202 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 235 flow [2023-08-27 07:51:08,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:08,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:08,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 07:51:08,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:08,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:08,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2072777360, now seen corresponding path program 1 times [2023-08-27 07:51:08,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742880525] [2023-08-27 07:51:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742880525] [2023-08-27 07:51:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742880525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:51:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901703416] [2023-08-27 07:51:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:51:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:51:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:51:08,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 390 [2023-08-27 07:51:08,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:08,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 390 [2023-08-27 07:51:08,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:08,363 INFO L124 PetriNetUnfolderBase]: 394/701 cut-off events. [2023-08-27 07:51:08,363 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-27 07:51:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 701 events. 394/701 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3161 event pairs, 84 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 1622. Up to 401 conditions per place. [2023-08-27 07:51:08,366 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 61 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2023-08-27 07:51:08,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 429 flow [2023-08-27 07:51:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:51:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:51:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-27 07:51:08,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3779487179487179 [2023-08-27 07:51:08,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-27 07:51:08,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-27 07:51:08,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:08,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-27 07:51:08,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,371 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 235 flow. Second operand 5 states and 737 transitions. [2023-08-27 07:51:08,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 429 flow [2023-08-27 07:51:08,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 421 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:08,373 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 245 flow [2023-08-27 07:51:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-08-27 07:51:08,373 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-27 07:51:08,373 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 245 flow [2023-08-27 07:51:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 07:51:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:51:08,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:08,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1838394981, now seen corresponding path program 1 times [2023-08-27 07:51:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:08,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173257496] [2023-08-27 07:51:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:08,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173257496] [2023-08-27 07:51:08,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173257496] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:08,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101430625] [2023-08-27 07:51:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:08,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:08,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:08,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 07:51:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:51:08,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:08,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:08,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101430625] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:08,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:08,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 07:51:08,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86497856] [2023-08-27 07:51:08,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:51:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:08,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:51:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:51:08,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 390 [2023-08-27 07:51:08,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 245 flow. Second operand has 13 states, 13 states have (on average 156.15384615384616) internal successors, (2030), 13 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:08,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 390 [2023-08-27 07:51:08,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:08,650 INFO L124 PetriNetUnfolderBase]: 300/577 cut-off events. [2023-08-27 07:51:08,651 INFO L125 PetriNetUnfolderBase]: For 171/177 co-relation queries the response was YES. [2023-08-27 07:51:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 577 events. 300/577 cut-off events. For 171/177 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3077 event pairs, 230 based on Foata normal form. 12/466 useless extension candidates. Maximal degree in co-relation 1351. Up to 527 conditions per place. [2023-08-27 07:51:08,653 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 27 selfloop transitions, 41 changer transitions 0/70 dead transitions. [2023-08-27 07:51:08,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 549 flow [2023-08-27 07:51:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:51:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:51:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1931 transitions. [2023-08-27 07:51:08,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126068376068376 [2023-08-27 07:51:08,657 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1931 transitions. [2023-08-27 07:51:08,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1931 transitions. [2023-08-27 07:51:08,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:08,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1931 transitions. [2023-08-27 07:51:08,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 160.91666666666666) internal successors, (1931), 12 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,665 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 390.0) internal successors, (5070), 13 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,665 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 245 flow. Second operand 12 states and 1931 transitions. [2023-08-27 07:51:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 549 flow [2023-08-27 07:51:08,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 529 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 07:51:08,667 INFO L231 Difference]: Finished difference. Result has 62 places, 70 transitions, 529 flow [2023-08-27 07:51:08,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=529, PETRI_PLACES=62, PETRI_TRANSITIONS=70} [2023-08-27 07:51:08,667 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-08-27 07:51:08,668 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 70 transitions, 529 flow [2023-08-27 07:51:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 156.15384615384616) internal successors, (2030), 13 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:08,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:08,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:08,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:08,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:08,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:08,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:08,873 INFO L85 PathProgramCache]: Analyzing trace with hash -180103918, now seen corresponding path program 1 times [2023-08-27 07:51:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:08,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735238925] [2023-08-27 07:51:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735238925] [2023-08-27 07:51:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735238925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984086857] [2023-08-27 07:51:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:08,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:08,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:08,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:08,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 07:51:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:08,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:51:08,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:09,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:51:09,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984086857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:09,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:51:09,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 07:51:09,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890168704] [2023-08-27 07:51:09,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:51:09,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 390 [2023-08-27 07:51:09,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 70 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:09,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 390 [2023-08-27 07:51:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:09,057 INFO L124 PetriNetUnfolderBase]: 232/461 cut-off events. [2023-08-27 07:51:09,057 INFO L125 PetriNetUnfolderBase]: For 150/152 co-relation queries the response was YES. [2023-08-27 07:51:09,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 461 events. 232/461 cut-off events. For 150/152 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2298 event pairs, 168 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 1241. Up to 449 conditions per place. [2023-08-27 07:51:09,059 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 65 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-08-27 07:51:09,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 653 flow [2023-08-27 07:51:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2023-08-27 07:51:09,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2023-08-27 07:51:09,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2023-08-27 07:51:09,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2023-08-27 07:51:09,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:09,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2023-08-27 07:51:09,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,088 INFO L175 Difference]: Start difference. First operand has 62 places, 70 transitions, 529 flow. Second operand 3 states and 530 transitions. [2023-08-27 07:51:09,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 653 flow [2023-08-27 07:51:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 529 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-27 07:51:09,093 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 399 flow [2023-08-27 07:51:09,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2023-08-27 07:51:09,093 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-27 07:51:09,093 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 399 flow [2023-08-27 07:51:09,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:09,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:09,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:09,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:09,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:09,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1088163945, now seen corresponding path program 1 times [2023-08-27 07:51:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065459677] [2023-08-27 07:51:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:09,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:09,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065459677] [2023-08-27 07:51:09,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065459677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:51:09,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599847510] [2023-08-27 07:51:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:09,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:09,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:09,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 390 [2023-08-27 07:51:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:09,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 390 [2023-08-27 07:51:09,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:09,373 INFO L124 PetriNetUnfolderBase]: 311/566 cut-off events. [2023-08-27 07:51:09,373 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-08-27 07:51:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 566 events. 311/566 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2370 event pairs, 217 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 1487. Up to 566 conditions per place. [2023-08-27 07:51:09,376 INFO L140 encePairwiseOnDemand]: 388/390 looper letters, 66 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-08-27 07:51:09,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 529 flow [2023-08-27 07:51:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-27 07:51:09,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427350427350427 [2023-08-27 07:51:09,377 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-27 07:51:09,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-27 07:51:09,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:09,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-27 07:51:09,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,380 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 399 flow. Second operand 3 states and 518 transitions. [2023-08-27 07:51:09,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 529 flow [2023-08-27 07:51:09,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:09,382 INFO L231 Difference]: Finished difference. Result has 57 places, 67 transitions, 396 flow [2023-08-27 07:51:09,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=67} [2023-08-27 07:51:09,383 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-27 07:51:09,383 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 67 transitions, 396 flow [2023-08-27 07:51:09,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:09,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:09,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 07:51:09,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:09,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1088163944, now seen corresponding path program 1 times [2023-08-27 07:51:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562683225] [2023-08-27 07:51:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:09,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562683225] [2023-08-27 07:51:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562683225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051262916] [2023-08-27 07:51:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:09,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:09,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:09,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 07:51:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:09,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:51:09,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:09,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051262916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:09,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-27 07:51:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729063655] [2023-08-27 07:51:09,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:09,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 07:51:09,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 07:51:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-27 07:51:09,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 390 [2023-08-27 07:51:09,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 67 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 137.92307692307693) internal successors, (1793), 13 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 390 [2023-08-27 07:51:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:09,836 INFO L124 PetriNetUnfolderBase]: 590/1065 cut-off events. [2023-08-27 07:51:09,836 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2023-08-27 07:51:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 1065 events. 590/1065 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5150 event pairs, 118 based on Foata normal form. 18/993 useless extension candidates. Maximal degree in co-relation 2679. Up to 216 conditions per place. [2023-08-27 07:51:09,840 INFO L140 encePairwiseOnDemand]: 380/390 looper letters, 122 selfloop transitions, 24 changer transitions 0/146 dead transitions. [2023-08-27 07:51:09,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 146 transitions, 892 flow [2023-08-27 07:51:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:51:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:51:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1880 transitions. [2023-08-27 07:51:09,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708086785009862 [2023-08-27 07:51:09,845 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1880 transitions. [2023-08-27 07:51:09,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1880 transitions. [2023-08-27 07:51:09,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:09,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1880 transitions. [2023-08-27 07:51:09,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.6153846153846) internal successors, (1880), 13 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,853 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,853 INFO L175 Difference]: Start difference. First operand has 57 places, 67 transitions, 396 flow. Second operand 13 states and 1880 transitions. [2023-08-27 07:51:09,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 146 transitions, 892 flow [2023-08-27 07:51:09,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 146 transitions, 891 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:09,856 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 479 flow [2023-08-27 07:51:09,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=479, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-08-27 07:51:09,857 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 35 predicate places. [2023-08-27 07:51:09,858 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 479 flow [2023-08-27 07:51:09,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.92307692307693) internal successors, (1793), 13 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:09,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:09,858 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 07:51:09,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 07:51:10,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:10,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:10,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash 154724299, now seen corresponding path program 2 times [2023-08-27 07:51:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434642910] [2023-08-27 07:51:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:51:10,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434642910] [2023-08-27 07:51:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434642910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326011981] [2023-08-27 07:51:10,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:51:10,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:10,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:10,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 07:51:10,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:51:10,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:10,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:51:10,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 07:51:10,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-27 07:51:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326011981] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:10,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-08-27 07:51:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157786298] [2023-08-27 07:51:10,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:51:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:51:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:51:10,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 390 [2023-08-27 07:51:10,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:10,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 390 [2023-08-27 07:51:10,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:10,402 INFO L124 PetriNetUnfolderBase]: 771/1382 cut-off events. [2023-08-27 07:51:10,402 INFO L125 PetriNetUnfolderBase]: For 627/627 co-relation queries the response was YES. [2023-08-27 07:51:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3900 conditions, 1382 events. 771/1382 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6708 event pairs, 149 based on Foata normal form. 0/1274 useless extension candidates. Maximal degree in co-relation 3873. Up to 438 conditions per place. [2023-08-27 07:51:10,408 INFO L140 encePairwiseOnDemand]: 385/390 looper letters, 124 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2023-08-27 07:51:10,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 913 flow [2023-08-27 07:51:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:51:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:51:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1211 transitions. [2023-08-27 07:51:10,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44358974358974357 [2023-08-27 07:51:10,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1211 transitions. [2023-08-27 07:51:10,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1211 transitions. [2023-08-27 07:51:10,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:10,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1211 transitions. [2023-08-27 07:51:10,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,425 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 479 flow. Second operand 7 states and 1211 transitions. [2023-08-27 07:51:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 913 flow [2023-08-27 07:51:10,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 132 transitions, 849 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-27 07:51:10,430 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 450 flow [2023-08-27 07:51:10,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2023-08-27 07:51:10,431 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-08-27 07:51:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 450 flow [2023-08-27 07:51:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.85714285714286) internal successors, (1140), 7 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:10,432 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-27 07:51:10,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:10,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:10,638 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:10,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1713134171, now seen corresponding path program 2 times [2023-08-27 07:51:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:10,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26843800] [2023-08-27 07:51:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:10,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26843800] [2023-08-27 07:51:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26843800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:10,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976440625] [2023-08-27 07:51:10,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:51:10,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:10,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:10,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:10,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 07:51:10,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:51:10,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:10,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:51:10,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 07:51:10,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:51:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976440625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:51:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-27 07:51:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913179087] [2023-08-27 07:51:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:51:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:51:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-27 07:51:10,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 390 [2023-08-27 07:51:10,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:10,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 390 [2023-08-27 07:51:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:10,985 INFO L124 PetriNetUnfolderBase]: 771/1380 cut-off events. [2023-08-27 07:51:10,985 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2023-08-27 07:51:10,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 1380 events. 771/1380 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6702 event pairs, 571 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 3983. Up to 1380 conditions per place. [2023-08-27 07:51:10,991 INFO L140 encePairwiseOnDemand]: 388/390 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-27 07:51:10,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 572 flow [2023-08-27 07:51:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-27 07:51:10,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-27 07:51:10,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-27 07:51:10,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-27 07:51:10,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:10,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-27 07:51:10,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,995 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 450 flow. Second operand 3 states and 471 transitions. [2023-08-27 07:51:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 572 flow [2023-08-27 07:51:10,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 472 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-08-27 07:51:10,997 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 328 flow [2023-08-27 07:51:10,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=57, PETRI_TRANSITIONS=73} [2023-08-27 07:51:10,998 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-27 07:51:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 328 flow [2023-08-27 07:51:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:11,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:11,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 07:51:11,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:11,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -981503638, now seen corresponding path program 1 times [2023-08-27 07:51:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873018476] [2023-08-27 07:51:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:11,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:11,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873018476] [2023-08-27 07:51:11,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873018476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:11,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866196680] [2023-08-27 07:51:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:11,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:11,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:11,256 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:11,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 07:51:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:11,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:51:11,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:11,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:11,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866196680] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:11,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 07:51:11,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-08-27 07:51:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556075996] [2023-08-27 07:51:11,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:11,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:51:11,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:51:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-08-27 07:51:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 390 [2023-08-27 07:51:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:11,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 390 [2023-08-27 07:51:11,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:11,492 INFO L124 PetriNetUnfolderBase]: 718/1291 cut-off events. [2023-08-27 07:51:11,493 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2023-08-27 07:51:11,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 1291 events. 718/1291 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6090 event pairs, 118 based on Foata normal form. 36/1219 useless extension candidates. Maximal degree in co-relation 3449. Up to 561 conditions per place. [2023-08-27 07:51:11,497 INFO L140 encePairwiseOnDemand]: 383/390 looper letters, 66 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-27 07:51:11,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 548 flow [2023-08-27 07:51:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:51:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:51:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 860 transitions. [2023-08-27 07:51:11,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755 [2023-08-27 07:51:11,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 860 transitions. [2023-08-27 07:51:11,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 860 transitions. [2023-08-27 07:51:11,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:11,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 860 transitions. [2023-08-27 07:51:11,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,503 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,503 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 328 flow. Second operand 6 states and 860 transitions. [2023-08-27 07:51:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 548 flow [2023-08-27 07:51:11,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:51:11,506 INFO L231 Difference]: Finished difference. Result has 60 places, 73 transitions, 389 flow [2023-08-27 07:51:11,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=60, PETRI_TRANSITIONS=73} [2023-08-27 07:51:11,507 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-08-27 07:51:11,507 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 73 transitions, 389 flow [2023-08-27 07:51:11,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:11,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:11,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:11,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 07:51:11,714 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:11,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash 844273561, now seen corresponding path program 1 times [2023-08-27 07:51:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107001078] [2023-08-27 07:51:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:11,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:11,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107001078] [2023-08-27 07:51:11,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107001078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:11,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:11,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:51:11,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970732792] [2023-08-27 07:51:11,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:11,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:51:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:51:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:51:11,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 390 [2023-08-27 07:51:11,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 73 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:11,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 390 [2023-08-27 07:51:11,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:11,983 INFO L124 PetriNetUnfolderBase]: 1078/1929 cut-off events. [2023-08-27 07:51:11,983 INFO L125 PetriNetUnfolderBase]: For 1049/1049 co-relation queries the response was YES. [2023-08-27 07:51:11,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 1929 events. 1078/1929 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10235 event pairs, 319 based on Foata normal form. 110/1907 useless extension candidates. Maximal degree in co-relation 5702. Up to 991 conditions per place. [2023-08-27 07:51:11,990 INFO L140 encePairwiseOnDemand]: 383/390 looper letters, 91 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2023-08-27 07:51:11,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 837 flow [2023-08-27 07:51:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:51:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:51:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2023-08-27 07:51:11,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153846153846153 [2023-08-27 07:51:11,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2023-08-27 07:51:11,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2023-08-27 07:51:11,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:11,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2023-08-27 07:51:11,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:11,996 INFO L175 Difference]: Start difference. First operand has 60 places, 73 transitions, 389 flow. Second operand 5 states and 822 transitions. [2023-08-27 07:51:11,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 837 flow [2023-08-27 07:51:11,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 804 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:12,000 INFO L231 Difference]: Finished difference. Result has 65 places, 92 transitions, 601 flow [2023-08-27 07:51:12,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=601, PETRI_PLACES=65, PETRI_TRANSITIONS=92} [2023-08-27 07:51:12,000 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-08-27 07:51:12,000 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 92 transitions, 601 flow [2023-08-27 07:51:12,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:12,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:12,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 07:51:12,001 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:12,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1264735683, now seen corresponding path program 2 times [2023-08-27 07:51:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:12,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529502940] [2023-08-27 07:51:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:12,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529502940] [2023-08-27 07:51:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529502940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:51:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751842716] [2023-08-27 07:51:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:51:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:51:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:51:12,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 390 [2023-08-27 07:51:12,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 92 transitions, 601 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:12,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 390 [2023-08-27 07:51:12,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:12,209 INFO L124 PetriNetUnfolderBase]: 1176/2173 cut-off events. [2023-08-27 07:51:12,209 INFO L125 PetriNetUnfolderBase]: For 3908/3962 co-relation queries the response was YES. [2023-08-27 07:51:12,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8427 conditions, 2173 events. 1176/2173 cut-off events. For 3908/3962 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12351 event pairs, 411 based on Foata normal form. 16/1992 useless extension candidates. Maximal degree in co-relation 8407. Up to 1032 conditions per place. [2023-08-27 07:51:12,218 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 112 selfloop transitions, 4 changer transitions 4/125 dead transitions. [2023-08-27 07:51:12,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 125 transitions, 1119 flow [2023-08-27 07:51:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:51:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:51:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-27 07:51:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45726495726495725 [2023-08-27 07:51:12,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-27 07:51:12,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-27 07:51:12,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:12,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-27 07:51:12,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,222 INFO L175 Difference]: Start difference. First operand has 65 places, 92 transitions, 601 flow. Second operand 3 states and 535 transitions. [2023-08-27 07:51:12,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 125 transitions, 1119 flow [2023-08-27 07:51:12,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 125 transitions, 1119 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:51:12,233 INFO L231 Difference]: Finished difference. Result has 68 places, 93 transitions, 628 flow [2023-08-27 07:51:12,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=628, PETRI_PLACES=68, PETRI_TRANSITIONS=93} [2023-08-27 07:51:12,233 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 33 predicate places. [2023-08-27 07:51:12,233 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 93 transitions, 628 flow [2023-08-27 07:51:12,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:12,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:12,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 07:51:12,234 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:12,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2142741434, now seen corresponding path program 1 times [2023-08-27 07:51:12,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:12,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759188659] [2023-08-27 07:51:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:12,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:51:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759188659] [2023-08-27 07:51:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759188659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:51:12,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:51:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:51:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687273020] [2023-08-27 07:51:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:51:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:51:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:51:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:51:12,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 390 [2023-08-27 07:51:12,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 93 transitions, 628 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:12,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 390 [2023-08-27 07:51:12,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:12,573 INFO L124 PetriNetUnfolderBase]: 1212/2159 cut-off events. [2023-08-27 07:51:12,573 INFO L125 PetriNetUnfolderBase]: For 4153/4153 co-relation queries the response was YES. [2023-08-27 07:51:12,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 2159 events. 1212/2159 cut-off events. For 4153/4153 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11531 event pairs, 234 based on Foata normal form. 124/2149 useless extension candidates. Maximal degree in co-relation 8576. Up to 1565 conditions per place. [2023-08-27 07:51:12,582 INFO L140 encePairwiseOnDemand]: 385/390 looper letters, 113 selfloop transitions, 2 changer transitions 19/134 dead transitions. [2023-08-27 07:51:12,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 1183 flow [2023-08-27 07:51:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:51:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:51:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 819 transitions. [2023-08-27 07:51:12,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2023-08-27 07:51:12,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 819 transitions. [2023-08-27 07:51:12,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 819 transitions. [2023-08-27 07:51:12,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:12,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 819 transitions. [2023-08-27 07:51:12,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,588 INFO L175 Difference]: Start difference. First operand has 68 places, 93 transitions, 628 flow. Second operand 5 states and 819 transitions. [2023-08-27 07:51:12,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 1183 flow [2023-08-27 07:51:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 1177 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 07:51:12,596 INFO L231 Difference]: Finished difference. Result has 71 places, 94 transitions, 652 flow [2023-08-27 07:51:12,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=71, PETRI_TRANSITIONS=94} [2023-08-27 07:51:12,596 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-08-27 07:51:12,596 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 94 transitions, 652 flow [2023-08-27 07:51:12,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:12,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:12,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 07:51:12,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:12,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -510008486, now seen corresponding path program 1 times [2023-08-27 07:51:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459287135] [2023-08-27 07:51:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:13,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459287135] [2023-08-27 07:51:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459287135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:13,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256074548] [2023-08-27 07:51:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:13,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:13,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:13,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:13,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 07:51:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:13,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-27 07:51:13,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:13,593 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-08-27 07:51:13,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2023-08-27 07:51:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:13,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:13,823 INFO L322 Elim1Store]: treesize reduction 11, result has 87.1 percent of original size [2023-08-27 07:51:13,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 99 [2023-08-27 07:51:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256074548] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:14,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 25 [2023-08-27 07:51:14,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607580526] [2023-08-27 07:51:14,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:14,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 07:51:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 07:51:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-08-27 07:51:14,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 390 [2023-08-27 07:51:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 94 transitions, 652 flow. Second operand has 27 states, 27 states have (on average 100.44444444444444) internal successors, (2712), 27 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 390 [2023-08-27 07:51:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:18,497 INFO L124 PetriNetUnfolderBase]: 7072/12370 cut-off events. [2023-08-27 07:51:18,497 INFO L125 PetriNetUnfolderBase]: For 33027/33027 co-relation queries the response was YES. [2023-08-27 07:51:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54168 conditions, 12370 events. 7072/12370 cut-off events. For 33027/33027 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 91119 event pairs, 172 based on Foata normal form. 147/11679 useless extension candidates. Maximal degree in co-relation 54142. Up to 3365 conditions per place. [2023-08-27 07:51:18,638 INFO L140 encePairwiseOnDemand]: 372/390 looper letters, 552 selfloop transitions, 265 changer transitions 306/1123 dead transitions. [2023-08-27 07:51:18,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 1123 transitions, 11473 flow [2023-08-27 07:51:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-08-27 07:51:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-08-27 07:51:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 7006 transitions. [2023-08-27 07:51:18,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2721833721833722 [2023-08-27 07:51:18,653 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 7006 transitions. [2023-08-27 07:51:18,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 7006 transitions. [2023-08-27 07:51:18,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:18,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 7006 transitions. [2023-08-27 07:51:18,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 106.15151515151516) internal successors, (7006), 66 states have internal predecessors, (7006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:18,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 390.0) internal successors, (26130), 67 states have internal predecessors, (26130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:18,691 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 390.0) internal successors, (26130), 67 states have internal predecessors, (26130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:18,691 INFO L175 Difference]: Start difference. First operand has 71 places, 94 transitions, 652 flow. Second operand 66 states and 7006 transitions. [2023-08-27 07:51:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 1123 transitions, 11473 flow [2023-08-27 07:51:18,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 1123 transitions, 11362 flow, removed 50 selfloop flow, removed 3 redundant places. [2023-08-27 07:51:18,795 INFO L231 Difference]: Finished difference. Result has 184 places, 377 transitions, 4543 flow [2023-08-27 07:51:18,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=4543, PETRI_PLACES=184, PETRI_TRANSITIONS=377} [2023-08-27 07:51:18,796 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 149 predicate places. [2023-08-27 07:51:18,796 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 377 transitions, 4543 flow [2023-08-27 07:51:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.44444444444444) internal successors, (2712), 27 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:18,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:18,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:18,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 07:51:19,001 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:19,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1252396876, now seen corresponding path program 2 times [2023-08-27 07:51:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:19,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876520865] [2023-08-27 07:51:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876520865] [2023-08-27 07:51:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876520865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546556464] [2023-08-27 07:51:19,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:51:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:19,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:19,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 07:51:19,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:51:19,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:19,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 07:51:19,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:19,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:51:19,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546556464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:19,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:19,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-27 07:51:19,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943801964] [2023-08-27 07:51:19,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:19,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:51:19,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:19,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:51:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:51:19,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 390 [2023-08-27 07:51:19,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 377 transitions, 4543 flow. Second operand has 9 states, 9 states have (on average 157.55555555555554) internal successors, (1418), 9 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:19,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:19,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 390 [2023-08-27 07:51:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:21,036 INFO L124 PetriNetUnfolderBase]: 6310/10810 cut-off events. [2023-08-27 07:51:21,037 INFO L125 PetriNetUnfolderBase]: For 240490/240490 co-relation queries the response was YES. [2023-08-27 07:51:21,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89085 conditions, 10810 events. 6310/10810 cut-off events. For 240490/240490 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 75815 event pairs, 545 based on Foata normal form. 194/11004 useless extension candidates. Maximal degree in co-relation 89007. Up to 3769 conditions per place. [2023-08-27 07:51:21,144 INFO L140 encePairwiseOnDemand]: 383/390 looper letters, 334 selfloop transitions, 223 changer transitions 0/557 dead transitions. [2023-08-27 07:51:21,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 557 transitions, 8269 flow [2023-08-27 07:51:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:51:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:51:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1296 transitions. [2023-08-27 07:51:21,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2023-08-27 07:51:21,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1296 transitions. [2023-08-27 07:51:21,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1296 transitions. [2023-08-27 07:51:21,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:21,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1296 transitions. [2023-08-27 07:51:21,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:21,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:21,150 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:21,150 INFO L175 Difference]: Start difference. First operand has 184 places, 377 transitions, 4543 flow. Second operand 8 states and 1296 transitions. [2023-08-27 07:51:21,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 557 transitions, 8269 flow [2023-08-27 07:51:21,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 557 transitions, 6842 flow, removed 703 selfloop flow, removed 21 redundant places. [2023-08-27 07:51:21,904 INFO L231 Difference]: Finished difference. Result has 156 places, 456 transitions, 5884 flow [2023-08-27 07:51:21,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5884, PETRI_PLACES=156, PETRI_TRANSITIONS=456} [2023-08-27 07:51:21,905 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 121 predicate places. [2023-08-27 07:51:21,905 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 456 transitions, 5884 flow [2023-08-27 07:51:21,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 157.55555555555554) internal successors, (1418), 9 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:21,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:21,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:21,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 07:51:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:22,109 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:22,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:22,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1841814328, now seen corresponding path program 3 times [2023-08-27 07:51:22,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420936334] [2023-08-27 07:51:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420936334] [2023-08-27 07:51:22,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420936334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:22,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503857569] [2023-08-27 07:51:22,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:51:22,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:22,733 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:22,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 07:51:22,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 07:51:22,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:22,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-27 07:51:22,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:22,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:22,887 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 07:51:22,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 07:51:22,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 07:51:22,982 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:51:22,982 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 07:51:23,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 07:51:23,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:23,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:51:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:23,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 07:51:23,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-08-27 07:51:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:23,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:23,738 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (let ((.cse1 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse3 (+ (* c_~i~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_573 (Array Int Int)) (v_ArrVal_572 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_572) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_573))) (let ((.cse0 (select .cse2 c_~queue~0.base))) (or (< (select (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 1 (select .cse0 (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (select .cse0 .cse1) (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3))))))) (or (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_573 (Array Int Int)) (v_ArrVal_572 (Array Int Int))) (not (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_572) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_573))) (= (select (select .cse4 c_~queue~0.base) .cse1) (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) .cse3))))))))) is different from false [2023-08-27 07:51:26,090 INFO L322 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-27 07:51:26,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 84 [2023-08-27 07:51:26,151 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:26,151 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 508 treesize of output 548 [2023-08-27 07:51:26,186 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:26,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 402 treesize of output 346 [2023-08-27 07:51:26,225 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:26,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 285 treesize of output 275 [2023-08-27 07:51:30,753 INFO L322 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-27 07:51:30,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 65 [2023-08-27 07:51:30,760 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:51:30,760 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:51:30,787 INFO L322 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2023-08-27 07:51:30,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 182 [2023-08-27 07:51:30,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2023-08-27 07:51:30,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-27 07:51:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 07:51:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503857569] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:30,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:30,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-27 07:51:30,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573331907] [2023-08-27 07:51:30,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:30,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 07:51:30,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 07:51:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=575, Unknown=12, NotChecked=50, Total=756 [2023-08-27 07:51:30,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 390 [2023-08-27 07:51:30,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 456 transitions, 5884 flow. Second operand has 28 states, 28 states have (on average 89.35714285714286) internal successors, (2502), 28 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:30,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:30,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 390 [2023-08-27 07:51:30,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:34,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 07:51:36,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 07:51:38,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 07:51:48,913 INFO L124 PetriNetUnfolderBase]: 14271/24350 cut-off events. [2023-08-27 07:51:48,914 INFO L125 PetriNetUnfolderBase]: For 330848/330848 co-relation queries the response was YES. [2023-08-27 07:51:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177816 conditions, 24350 events. 14271/24350 cut-off events. For 330848/330848 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 193982 event pairs, 898 based on Foata normal form. 107/24457 useless extension candidates. Maximal degree in co-relation 177753. Up to 6588 conditions per place. [2023-08-27 07:51:49,105 INFO L140 encePairwiseOnDemand]: 375/390 looper letters, 968 selfloop transitions, 553 changer transitions 162/1683 dead transitions. [2023-08-27 07:51:49,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1683 transitions, 28643 flow [2023-08-27 07:51:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 07:51:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 07:51:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4503 transitions. [2023-08-27 07:51:49,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2405448717948718 [2023-08-27 07:51:49,111 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4503 transitions. [2023-08-27 07:51:49,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4503 transitions. [2023-08-27 07:51:49,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:51:49,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4503 transitions. [2023-08-27 07:51:49,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 93.8125) internal successors, (4503), 48 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:49,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:49,128 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:49,128 INFO L175 Difference]: Start difference. First operand has 156 places, 456 transitions, 5884 flow. Second operand 48 states and 4503 transitions. [2023-08-27 07:51:49,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 1683 transitions, 28643 flow [2023-08-27 07:51:51,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1683 transitions, 26935 flow, removed 854 selfloop flow, removed 0 redundant places. [2023-08-27 07:51:51,770 INFO L231 Difference]: Finished difference. Result has 230 places, 906 transitions, 14163 flow [2023-08-27 07:51:51,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=5596, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=14163, PETRI_PLACES=230, PETRI_TRANSITIONS=906} [2023-08-27 07:51:51,771 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 195 predicate places. [2023-08-27 07:51:51,771 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 906 transitions, 14163 flow [2023-08-27 07:51:51,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 89.35714285714286) internal successors, (2502), 28 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:51,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:51:51,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:51:51,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 07:51:51,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:51,976 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:51:51,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:51:51,977 INFO L85 PathProgramCache]: Analyzing trace with hash -815611558, now seen corresponding path program 4 times [2023-08-27 07:51:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:51:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604541708] [2023-08-27 07:51:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:51:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:51:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:51:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:51:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:51:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604541708] [2023-08-27 07:51:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604541708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:51:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502175480] [2023-08-27 07:51:52,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:51:52,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:51:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:51:52,557 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:51:52,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 07:51:52,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:51:52,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:51:52,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-27 07:51:52,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:51:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:52,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:52,679 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 07:51:52,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 07:51:52,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 07:51:52,759 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:51:52,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 07:51:52,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:51:52,820 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:51:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:51:52,967 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 07:51:52,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-08-27 07:51:52,981 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-08-27 07:51:53,061 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-27 07:51:53,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:51:53,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:51:53,440 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (and (not (= (mod c_~ok~0 256) 0)) (forall ((~A~0.offset Int) (v_ArrVal_618 (Array Int Int)) (v_ArrVal_617 (Array Int Int)) (~i~0 Int) (~A~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_617) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_618))) (let ((.cse0 (select (select .cse1 ~A~0.base) (+ (* ~i~0 4) ~A~0.offset)))) (or (forall ((v_ArrVal_619 (Array Int Int))) (< .cse0 (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_619) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) 1))) (not (= .cse0 (select (select .cse1 c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)))))))))) is different from false [2023-08-27 07:51:53,533 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:53,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 81 [2023-08-27 07:51:53,559 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:53,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2188 treesize of output 1978 [2023-08-27 07:51:53,612 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:53,613 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1140 treesize of output 940 [2023-08-27 07:51:53,646 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:51:53,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 900 treesize of output 820 [2023-08-27 07:51:53,666 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 470 [2023-08-27 07:51:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 07:51:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502175480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:51:58,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:51:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2023-08-27 07:51:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005650273] [2023-08-27 07:51:58,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:51:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-27 07:51:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:51:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-27 07:51:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=615, Unknown=3, NotChecked=52, Total=812 [2023-08-27 07:51:58,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 390 [2023-08-27 07:51:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 906 transitions, 14163 flow. Second operand has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:51:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:51:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 390 [2023-08-27 07:51:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:51:59,223 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~n~0 c_~end~0)) (.cse1 (< c_~end~0 0)) (.cse6 (+ (* c_~end~0 4) c_~queue~0.offset)) (.cse5 (+ (* c_~start~0 4) c_~queue~0.offset)) (.cse2 (not (= (mod c_~ok~0 256) 0)))) (and (or .cse0 .cse1 (and .cse2 (forall ((~A~0.offset Int) (v_ArrVal_618 (Array Int Int)) (v_ArrVal_617 (Array Int Int)) (~i~0 Int) (~A~0.base Int)) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_617) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_618))) (let ((.cse3 (select (select .cse4 ~A~0.base) (+ (* ~i~0 4) ~A~0.offset)))) (or (forall ((v_ArrVal_619 (Array Int Int))) (< .cse3 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_619) c_~queue~0.base) .cse5) 1))) (not (= .cse3 (select (select .cse4 c_~queue~0.base) .cse6))))))))) (= c_~ok~0 1) (or .cse0 .cse1 (and (forall ((~A~0.offset Int) (v_ArrVal_618 (Array Int Int)) (~i~0 Int) (~A~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_618))) (let ((.cse8 (select (select .cse7 ~A~0.base) (+ (* ~i~0 4) ~A~0.offset)))) (or (not (= (select (select .cse7 c_~queue~0.base) .cse6) .cse8)) (forall ((v_ArrVal_619 (Array Int Int))) (< .cse8 (+ (select (select (store .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_619) c_~queue~0.base) .cse5) 1))))))) .cse2)))) is different from false [2023-08-27 07:52:03,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 07:52:05,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 07:52:16,712 INFO L124 PetriNetUnfolderBase]: 18570/31601 cut-off events. [2023-08-27 07:52:16,712 INFO L125 PetriNetUnfolderBase]: For 470961/470961 co-relation queries the response was YES. [2023-08-27 07:52:16,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243480 conditions, 31601 events. 18570/31601 cut-off events. For 470961/470961 co-relation queries the response was YES. Maximal size of possible extension queue 1479. Compared 260268 event pairs, 1998 based on Foata normal form. 37/31638 useless extension candidates. Maximal degree in co-relation 243388. Up to 8893 conditions per place. [2023-08-27 07:52:17,077 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 1187 selfloop transitions, 469 changer transitions 81/1737 dead transitions. [2023-08-27 07:52:17,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1737 transitions, 32117 flow [2023-08-27 07:52:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 07:52:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 07:52:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3704 transitions. [2023-08-27 07:52:17,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2435239973701512 [2023-08-27 07:52:17,084 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3704 transitions. [2023-08-27 07:52:17,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3704 transitions. [2023-08-27 07:52:17,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:52:17,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3704 transitions. [2023-08-27 07:52:17,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 94.97435897435898) internal successors, (3704), 39 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:17,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 390.0) internal successors, (15600), 40 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:17,101 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 390.0) internal successors, (15600), 40 states have internal predecessors, (15600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:17,101 INFO L175 Difference]: Start difference. First operand has 230 places, 906 transitions, 14163 flow. Second operand 39 states and 3704 transitions. [2023-08-27 07:52:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1737 transitions, 32117 flow [2023-08-27 07:52:21,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1737 transitions, 31231 flow, removed 370 selfloop flow, removed 12 redundant places. [2023-08-27 07:52:21,231 INFO L231 Difference]: Finished difference. Result has 262 places, 1120 transitions, 18385 flow [2023-08-27 07:52:21,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=13641, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18385, PETRI_PLACES=262, PETRI_TRANSITIONS=1120} [2023-08-27 07:52:21,232 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 227 predicate places. [2023-08-27 07:52:21,232 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1120 transitions, 18385 flow [2023-08-27 07:52:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:21,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:52:21,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:52:21,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 07:52:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 07:52:21,437 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:52:21,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:52:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1792487133, now seen corresponding path program 5 times [2023-08-27 07:52:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:52:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001463115] [2023-08-27 07:52:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:52:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:52:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:52:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:52:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:52:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001463115] [2023-08-27 07:52:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001463115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:52:21,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:52:21,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:52:21,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150870029] [2023-08-27 07:52:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:52:21,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:52:21,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:52:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:52:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:52:21,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 390 [2023-08-27 07:52:21,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1120 transitions, 18385 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:21,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:52:21,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 390 [2023-08-27 07:52:21,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:52:30,259 INFO L124 PetriNetUnfolderBase]: 17212/30558 cut-off events. [2023-08-27 07:52:30,259 INFO L125 PetriNetUnfolderBase]: For 584260/584260 co-relation queries the response was YES. [2023-08-27 07:52:30,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245996 conditions, 30558 events. 17212/30558 cut-off events. For 584260/584260 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 262540 event pairs, 2817 based on Foata normal form. 2122/32680 useless extension candidates. Maximal degree in co-relation 245909. Up to 11551 conditions per place. [2023-08-27 07:52:30,550 INFO L140 encePairwiseOnDemand]: 387/390 looper letters, 766 selfloop transitions, 255 changer transitions 150/1171 dead transitions. [2023-08-27 07:52:30,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1171 transitions, 21849 flow [2023-08-27 07:52:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:52:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:52:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2023-08-27 07:52:30,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596153846153846 [2023-08-27 07:52:30,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2023-08-27 07:52:30,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2023-08-27 07:52:30,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:52:30,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2023-08-27 07:52:30,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:30,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:30,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:30,553 INFO L175 Difference]: Start difference. First operand has 262 places, 1120 transitions, 18385 flow. Second operand 4 states and 717 transitions. [2023-08-27 07:52:30,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1171 transitions, 21849 flow [2023-08-27 07:52:36,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1171 transitions, 21157 flow, removed 258 selfloop flow, removed 20 redundant places. [2023-08-27 07:52:36,055 INFO L231 Difference]: Finished difference. Result has 236 places, 851 transitions, 14984 flow [2023-08-27 07:52:36,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=13294, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=14984, PETRI_PLACES=236, PETRI_TRANSITIONS=851} [2023-08-27 07:52:36,055 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 201 predicate places. [2023-08-27 07:52:36,056 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 851 transitions, 14984 flow [2023-08-27 07:52:36,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:36,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:52:36,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:52:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 07:52:36,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:52:36,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:52:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1945236596, now seen corresponding path program 6 times [2023-08-27 07:52:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:52:36,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236749572] [2023-08-27 07:52:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:52:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:52:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:52:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:52:36,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:52:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236749572] [2023-08-27 07:52:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236749572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:52:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388319613] [2023-08-27 07:52:36,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 07:52:36,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:52:36,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:52:36,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:52:36,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 07:52:36,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 07:52:36,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:52:36,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:52:36,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:52:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:52:36,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:52:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:52:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388319613] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:52:36,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:52:36,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-27 07:52:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410214787] [2023-08-27 07:52:36,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:52:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 07:52:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:52:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 07:52:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-27 07:52:36,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 390 [2023-08-27 07:52:36,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 851 transitions, 14984 flow. Second operand has 15 states, 15 states have (on average 139.33333333333334) internal successors, (2090), 15 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:36,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:52:36,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 390 [2023-08-27 07:52:36,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:52:42,638 INFO L124 PetriNetUnfolderBase]: 14732/25394 cut-off events. [2023-08-27 07:52:42,638 INFO L125 PetriNetUnfolderBase]: For 460961/460961 co-relation queries the response was YES. [2023-08-27 07:52:42,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218130 conditions, 25394 events. 14732/25394 cut-off events. For 460961/460961 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 204460 event pairs, 1147 based on Foata normal form. 80/25474 useless extension candidates. Maximal degree in co-relation 218050. Up to 12004 conditions per place. [2023-08-27 07:52:42,855 INFO L140 encePairwiseOnDemand]: 382/390 looper letters, 877 selfloop transitions, 270 changer transitions 5/1152 dead transitions. [2023-08-27 07:52:42,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1152 transitions, 22588 flow [2023-08-27 07:52:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 07:52:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 07:52:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1429 transitions. [2023-08-27 07:52:42,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36641025641025643 [2023-08-27 07:52:42,857 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1429 transitions. [2023-08-27 07:52:42,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1429 transitions. [2023-08-27 07:52:42,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:52:42,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1429 transitions. [2023-08-27 07:52:42,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.9) internal successors, (1429), 10 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:42,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 390.0) internal successors, (4290), 11 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:42,861 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 390.0) internal successors, (4290), 11 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:42,861 INFO L175 Difference]: Start difference. First operand has 236 places, 851 transitions, 14984 flow. Second operand 10 states and 1429 transitions. [2023-08-27 07:52:42,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1152 transitions, 22588 flow [2023-08-27 07:52:46,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1152 transitions, 22190 flow, removed 109 selfloop flow, removed 15 redundant places. [2023-08-27 07:52:46,367 INFO L231 Difference]: Finished difference. Result has 214 places, 884 transitions, 16417 flow [2023-08-27 07:52:46,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=14717, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16417, PETRI_PLACES=214, PETRI_TRANSITIONS=884} [2023-08-27 07:52:46,368 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 179 predicate places. [2023-08-27 07:52:46,368 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 884 transitions, 16417 flow [2023-08-27 07:52:46,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 139.33333333333334) internal successors, (2090), 15 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:46,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:52:46,368 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:52:46,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 07:52:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:52:46,569 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:52:46,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:52:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1227446988, now seen corresponding path program 7 times [2023-08-27 07:52:46,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:52:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73885184] [2023-08-27 07:52:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:52:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:52:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:52:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:52:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:52:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73885184] [2023-08-27 07:52:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73885184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:52:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182115117] [2023-08-27 07:52:47,903 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 07:52:47,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:52:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:52:47,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:52:47,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 07:52:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:52:48,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-27 07:52:48,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:52:48,302 INFO L322 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-08-27 07:52:48,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2023-08-27 07:52:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:52:48,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:52:50,524 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:52:50,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 121 [2023-08-27 07:52:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 07:52:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182115117] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:52:50,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:52:50,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 32 [2023-08-27 07:52:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427594488] [2023-08-27 07:52:50,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:52:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 07:52:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:52:50,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 07:52:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 07:52:50,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 390 [2023-08-27 07:52:50,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 884 transitions, 16417 flow. Second operand has 34 states, 34 states have (on average 91.94117647058823) internal successors, (3126), 34 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:52:50,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:52:50,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 390 [2023-08-27 07:52:50,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:52:59,790 INFO L124 PetriNetUnfolderBase]: 19278/33237 cut-off events. [2023-08-27 07:52:59,790 INFO L125 PetriNetUnfolderBase]: For 630429/630429 co-relation queries the response was YES. [2023-08-27 07:53:00,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290446 conditions, 33237 events. 19278/33237 cut-off events. For 630429/630429 co-relation queries the response was YES. Maximal size of possible extension queue 1478. Compared 278974 event pairs, 1453 based on Foata normal form. 18/33255 useless extension candidates. Maximal degree in co-relation 290380. Up to 13353 conditions per place. [2023-08-27 07:53:00,213 INFO L140 encePairwiseOnDemand]: 377/390 looper letters, 835 selfloop transitions, 493 changer transitions 62/1390 dead transitions. [2023-08-27 07:53:00,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1390 transitions, 28671 flow [2023-08-27 07:53:00,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 07:53:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 07:53:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2768 transitions. [2023-08-27 07:53:00,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2447391688770999 [2023-08-27 07:53:00,217 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2768 transitions. [2023-08-27 07:53:00,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2768 transitions. [2023-08-27 07:53:00,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:53:00,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2768 transitions. [2023-08-27 07:53:00,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 95.44827586206897) internal successors, (2768), 29 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:00,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:00,225 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:00,225 INFO L175 Difference]: Start difference. First operand has 214 places, 884 transitions, 16417 flow. Second operand 29 states and 2768 transitions. [2023-08-27 07:53:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1390 transitions, 28671 flow [2023-08-27 07:53:06,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1390 transitions, 28157 flow, removed 134 selfloop flow, removed 8 redundant places. [2023-08-27 07:53:06,705 INFO L231 Difference]: Finished difference. Result has 242 places, 1054 transitions, 20839 flow [2023-08-27 07:53:06,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=16102, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20839, PETRI_PLACES=242, PETRI_TRANSITIONS=1054} [2023-08-27 07:53:06,706 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 207 predicate places. [2023-08-27 07:53:06,706 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 1054 transitions, 20839 flow [2023-08-27 07:53:06,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 91.94117647058823) internal successors, (3126), 34 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:06,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:53:06,707 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:53:06,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 07:53:06,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:53:06,908 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:53:06,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:53:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash 173591260, now seen corresponding path program 8 times [2023-08-27 07:53:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:53:06,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703223912] [2023-08-27 07:53:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:53:06,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:53:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:53:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:53:08,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:53:08,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703223912] [2023-08-27 07:53:08,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703223912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:53:08,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225779414] [2023-08-27 07:53:08,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:53:08,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:53:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:53:08,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:53:08,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 07:53:08,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:53:08,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:53:08,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 07:53:08,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:53:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:53:08,857 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 07:53:08,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-08-27 07:53:08,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-08-27 07:53:08,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-27 07:53:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 07:53:08,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:53:09,118 WARN L839 $PredicateComparison]: unable to prove that (and (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_785 (Array Int Int))) (< c_~v_old~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_785) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) 1)))) is different from false [2023-08-27 07:53:09,213 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:53:09,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 135 [2023-08-27 07:53:09,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-08-27 07:53:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 07:53:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225779414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:53:09,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:53:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 33 [2023-08-27 07:53:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49115005] [2023-08-27 07:53:09,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:53:09,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 07:53:09,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:53:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 07:53:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=922, Unknown=1, NotChecked=64, Total=1190 [2023-08-27 07:53:09,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 390 [2023-08-27 07:53:09,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 1054 transitions, 20839 flow. Second operand has 35 states, 35 states have (on average 92.05714285714286) internal successors, (3222), 35 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:09,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:53:09,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 390 [2023-08-27 07:53:09,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:53:12,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-27 07:53:25,283 INFO L124 PetriNetUnfolderBase]: 26966/46615 cut-off events. [2023-08-27 07:53:25,283 INFO L125 PetriNetUnfolderBase]: For 957128/957128 co-relation queries the response was YES. [2023-08-27 07:53:25,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422401 conditions, 46615 events. 26966/46615 cut-off events. For 957128/957128 co-relation queries the response was YES. Maximal size of possible extension queue 2222. Compared 414854 event pairs, 1869 based on Foata normal form. 18/46633 useless extension candidates. Maximal degree in co-relation 422327. Up to 17830 conditions per place. [2023-08-27 07:53:25,905 INFO L140 encePairwiseOnDemand]: 375/390 looper letters, 971 selfloop transitions, 767 changer transitions 66/1804 dead transitions. [2023-08-27 07:53:25,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1804 transitions, 39698 flow [2023-08-27 07:53:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-27 07:53:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-27 07:53:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3158 transitions. [2023-08-27 07:53:25,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24537684537684537 [2023-08-27 07:53:25,909 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3158 transitions. [2023-08-27 07:53:25,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3158 transitions. [2023-08-27 07:53:25,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:53:25,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3158 transitions. [2023-08-27 07:53:25,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 95.6969696969697) internal successors, (3158), 33 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:25,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 390.0) internal successors, (13260), 34 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:25,918 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 390.0) internal successors, (13260), 34 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:25,918 INFO L175 Difference]: Start difference. First operand has 242 places, 1054 transitions, 20839 flow. Second operand 33 states and 3158 transitions. [2023-08-27 07:53:25,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1804 transitions, 39698 flow [2023-08-27 07:53:38,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1804 transitions, 39456 flow, removed 57 selfloop flow, removed 10 redundant places. [2023-08-27 07:53:38,769 INFO L231 Difference]: Finished difference. Result has 275 places, 1381 transitions, 30572 flow [2023-08-27 07:53:38,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=20633, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=30572, PETRI_PLACES=275, PETRI_TRANSITIONS=1381} [2023-08-27 07:53:38,770 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 240 predicate places. [2023-08-27 07:53:38,770 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 1381 transitions, 30572 flow [2023-08-27 07:53:38,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 92.05714285714286) internal successors, (3222), 35 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:38,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:53:38,771 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:53:38,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 07:53:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 07:53:38,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:53:38,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:53:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1581364680, now seen corresponding path program 9 times [2023-08-27 07:53:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:53:38,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407916010] [2023-08-27 07:53:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:53:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:53:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:53:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:53:40,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:53:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407916010] [2023-08-27 07:53:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407916010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:53:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171725805] [2023-08-27 07:53:40,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 07:53:40,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:53:40,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:53:40,350 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:53:40,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 07:53:40,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 07:53:40,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:53:40,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-27 07:53:40,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:53:40,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:53:40,737 INFO L322 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-08-27 07:53:40,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2023-08-27 07:53:40,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-08-27 07:53:40,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-27 07:53:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 07:53:40,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:53:40,994 WARN L839 $PredicateComparison]: unable to prove that (and (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_837 (Array Int Int))) (< c_~v_old~0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_837) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) 1)))) is different from false [2023-08-27 07:53:41,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:53:41,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 135 [2023-08-27 07:53:41,097 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-08-27 07:53:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 07:53:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171725805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:53:41,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:53:41,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 30 [2023-08-27 07:53:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861328780] [2023-08-27 07:53:41,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:53:41,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 07:53:41,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:53:41,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 07:53:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=760, Unknown=1, NotChecked=58, Total=992 [2023-08-27 07:53:41,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 390 [2023-08-27 07:53:41,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 1381 transitions, 30572 flow. Second operand has 32 states, 32 states have (on average 92.15625) internal successors, (2949), 32 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:53:41,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:53:41,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 390 [2023-08-27 07:53:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:53:59,358 INFO L124 PetriNetUnfolderBase]: 28911/50059 cut-off events. [2023-08-27 07:53:59,358 INFO L125 PetriNetUnfolderBase]: For 1263799/1263799 co-relation queries the response was YES. [2023-08-27 07:53:59,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485213 conditions, 50059 events. 28911/50059 cut-off events. For 1263799/1263799 co-relation queries the response was YES. Maximal size of possible extension queue 2448. Compared 452736 event pairs, 3693 based on Foata normal form. 18/50077 useless extension candidates. Maximal degree in co-relation 485127. Up to 21221 conditions per place. [2023-08-27 07:54:00,103 INFO L140 encePairwiseOnDemand]: 377/390 looper letters, 915 selfloop transitions, 842 changer transitions 57/1814 dead transitions. [2023-08-27 07:54:00,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 1814 transitions, 43208 flow [2023-08-27 07:54:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 07:54:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 07:54:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2310 transitions. [2023-08-27 07:54:00,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2467948717948718 [2023-08-27 07:54:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2310 transitions. [2023-08-27 07:54:00,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2310 transitions. [2023-08-27 07:54:00,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:54:00,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2310 transitions. [2023-08-27 07:54:00,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.25) internal successors, (2310), 24 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:00,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:00,113 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:00,113 INFO L175 Difference]: Start difference. First operand has 275 places, 1381 transitions, 30572 flow. Second operand 24 states and 2310 transitions. [2023-08-27 07:54:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 1814 transitions, 43208 flow [2023-08-27 07:54:17,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1814 transitions, 42586 flow, removed 235 selfloop flow, removed 13 redundant places. [2023-08-27 07:54:17,609 INFO L231 Difference]: Finished difference. Result has 288 places, 1443 transitions, 34012 flow [2023-08-27 07:54:17,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=29950, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=779, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=34012, PETRI_PLACES=288, PETRI_TRANSITIONS=1443} [2023-08-27 07:54:17,610 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 253 predicate places. [2023-08-27 07:54:17,610 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 1443 transitions, 34012 flow [2023-08-27 07:54:17,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 92.15625) internal successors, (2949), 32 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:17,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:54:17,611 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:54:17,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 07:54:17,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 07:54:17,813 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:54:17,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:54:17,813 INFO L85 PathProgramCache]: Analyzing trace with hash -950077512, now seen corresponding path program 10 times [2023-08-27 07:54:17,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:54:17,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926872367] [2023-08-27 07:54:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:54:17,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:54:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:54:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:54:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:54:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926872367] [2023-08-27 07:54:18,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926872367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:54:18,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336740045] [2023-08-27 07:54:18,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 07:54:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:54:18,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:54:18,930 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:54:18,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 07:54:19,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 07:54:19,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:54:19,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-27 07:54:19,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:54:19,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:54:19,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:54:19,296 INFO L322 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-08-27 07:54:19,297 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 10 [2023-08-27 07:54:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-27 07:54:19,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:54:21,707 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:54:21,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 273 [2023-08-27 07:54:21,730 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:54:21,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 174 treesize of output 185 [2023-08-27 07:54:21,744 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:54:21,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 137 [2023-08-27 07:54:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-27 07:54:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336740045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:54:22,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:54:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 28 [2023-08-27 07:54:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492025752] [2023-08-27 07:54:22,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:54:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 07:54:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:54:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 07:54:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=710, Unknown=1, NotChecked=0, Total=870 [2023-08-27 07:54:22,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 390 [2023-08-27 07:54:22,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1443 transitions, 34012 flow. Second operand has 30 states, 30 states have (on average 92.33333333333333) internal successors, (2770), 30 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:22,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:54:22,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 390 [2023-08-27 07:54:22,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:54:43,426 INFO L124 PetriNetUnfolderBase]: 30178/52169 cut-off events. [2023-08-27 07:54:43,426 INFO L125 PetriNetUnfolderBase]: For 1444909/1444909 co-relation queries the response was YES. [2023-08-27 07:54:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522266 conditions, 52169 events. 30178/52169 cut-off events. For 1444909/1444909 co-relation queries the response was YES. Maximal size of possible extension queue 2484. Compared 471596 event pairs, 3191 based on Foata normal form. 18/52187 useless extension candidates. Maximal degree in co-relation 522177. Up to 21168 conditions per place. [2023-08-27 07:54:44,093 INFO L140 encePairwiseOnDemand]: 376/390 looper letters, 880 selfloop transitions, 855 changer transitions 55/1790 dead transitions. [2023-08-27 07:54:44,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1790 transitions, 45066 flow [2023-08-27 07:54:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 07:54:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 07:54:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2111 transitions. [2023-08-27 07:54:44,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24603729603729604 [2023-08-27 07:54:44,096 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2111 transitions. [2023-08-27 07:54:44,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2111 transitions. [2023-08-27 07:54:44,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:54:44,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2111 transitions. [2023-08-27 07:54:44,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 95.95454545454545) internal successors, (2111), 22 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:44,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 390.0) internal successors, (8970), 23 states have internal predecessors, (8970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:44,102 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 390.0) internal successors, (8970), 23 states have internal predecessors, (8970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:54:44,102 INFO L175 Difference]: Start difference. First operand has 288 places, 1443 transitions, 34012 flow. Second operand 22 states and 2111 transitions. [2023-08-27 07:54:44,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1790 transitions, 45066 flow [2023-08-27 07:55:04,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1790 transitions, 44435 flow, removed 21 selfloop flow, removed 18 redundant places. [2023-08-27 07:55:04,897 INFO L231 Difference]: Finished difference. Result has 295 places, 1518 transitions, 38210 flow [2023-08-27 07:55:04,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=33441, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=766, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=38210, PETRI_PLACES=295, PETRI_TRANSITIONS=1518} [2023-08-27 07:55:04,898 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 260 predicate places. [2023-08-27 07:55:04,898 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1518 transitions, 38210 flow [2023-08-27 07:55:04,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 92.33333333333333) internal successors, (2770), 30 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:04,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:55:04,899 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:55:04,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 07:55:05,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 07:55:05,099 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:55:05,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:55:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash -673097994, now seen corresponding path program 11 times [2023-08-27 07:55:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:55:05,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114169936] [2023-08-27 07:55:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:55:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:55:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:55:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:55:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:55:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114169936] [2023-08-27 07:55:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114169936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:55:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937223592] [2023-08-27 07:55:05,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 07:55:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:55:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:55:05,187 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:55:05,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 07:55:05,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 07:55:05,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:55:05,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 07:55:05,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:55:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:55:05,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:55:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 07:55:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937223592] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:55:05,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:55:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 07:55:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36507674] [2023-08-27 07:55:05,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:55:05,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 07:55:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:55:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 07:55:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 07:55:05,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 390 [2023-08-27 07:55:05,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1518 transitions, 38210 flow. Second operand has 12 states, 12 states have (on average 144.16666666666666) internal successors, (1730), 12 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:05,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:55:05,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 390 [2023-08-27 07:55:05,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:55:17,788 INFO L124 PetriNetUnfolderBase]: 18861/33339 cut-off events. [2023-08-27 07:55:17,788 INFO L125 PetriNetUnfolderBase]: For 1149950/1149950 co-relation queries the response was YES. [2023-08-27 07:55:18,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354435 conditions, 33339 events. 18861/33339 cut-off events. For 1149950/1149950 co-relation queries the response was YES. Maximal size of possible extension queue 1687. Compared 291915 event pairs, 6560 based on Foata normal form. 715/34054 useless extension candidates. Maximal degree in co-relation 354343. Up to 26884 conditions per place. [2023-08-27 07:55:18,249 INFO L140 encePairwiseOnDemand]: 385/390 looper letters, 700 selfloop transitions, 3 changer transitions 481/1184 dead transitions. [2023-08-27 07:55:18,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1184 transitions, 33160 flow [2023-08-27 07:55:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:55:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:55:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1028 transitions. [2023-08-27 07:55:18,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37655677655677655 [2023-08-27 07:55:18,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1028 transitions. [2023-08-27 07:55:18,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1028 transitions. [2023-08-27 07:55:18,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:55:18,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1028 transitions. [2023-08-27 07:55:18,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.85714285714286) internal successors, (1028), 7 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:18,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:18,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:18,253 INFO L175 Difference]: Start difference. First operand has 295 places, 1518 transitions, 38210 flow. Second operand 7 states and 1028 transitions. [2023-08-27 07:55:18,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1184 transitions, 33160 flow [2023-08-27 07:55:31,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1184 transitions, 30791 flow, removed 450 selfloop flow, removed 20 redundant places. [2023-08-27 07:55:31,517 INFO L231 Difference]: Finished difference. Result has 268 places, 703 transitions, 16686 flow [2023-08-27 07:55:31,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=26287, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1093, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16686, PETRI_PLACES=268, PETRI_TRANSITIONS=703} [2023-08-27 07:55:31,518 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 233 predicate places. [2023-08-27 07:55:31,518 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 703 transitions, 16686 flow [2023-08-27 07:55:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 144.16666666666666) internal successors, (1730), 12 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:55:31,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:55:31,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:55:31,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 07:55:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:55:31,722 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 07:55:31,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:55:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1452074450, now seen corresponding path program 12 times [2023-08-27 07:55:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:55:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636758914] [2023-08-27 07:55:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:55:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:55:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:55:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:55:33,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:55:33,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636758914] [2023-08-27 07:55:33,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636758914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:55:33,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766690568] [2023-08-27 07:55:33,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 07:55:33,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:55:33,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:55:33,383 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:55:33,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 07:55:33,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 07:55:33,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:55:33,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-27 07:55:33,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:55:33,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:55:33,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:55:33,762 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-27 07:55:33,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-27 07:55:33,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:55:33,970 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 07:55:33,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 07:55:34,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:55:34,047 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:55:34,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:55:34,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 07:55:35,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:55:35,109 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:35,134 INFO L322 Elim1Store]: treesize reduction 81, result has 33.6 percent of original size [2023-08-27 07:55:35,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 56 [2023-08-27 07:55:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:55:35,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:55:50,594 WARN L234 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 07:55:53,818 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:55:53,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 126 [2023-08-27 07:55:53,886 INFO L322 Elim1Store]: treesize reduction 16, result has 82.8 percent of original size [2023-08-27 07:55:53,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3566 treesize of output 3370 [2023-08-27 07:55:53,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:53,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:53,952 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:55:53,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 3294 treesize of output 2542 [2023-08-27 07:55:53,999 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:53,999 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:54,024 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:55:54,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2419 treesize of output 2279 [2023-08-27 07:55:54,074 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:54,075 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:55:54,100 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:55:54,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 2274 treesize of output 1930 [2023-08-27 07:56:28,753 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:56:28,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 166 [2023-08-27 07:56:28,960 INFO L322 Elim1Store]: treesize reduction 16, result has 92.3 percent of original size [2023-08-27 07:56:28,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 28415 treesize of output 26457 [2023-08-27 07:56:29,133 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,221 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:56:29,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3400 treesize of output 2698 [2023-08-27 07:56:29,291 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,367 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:56:29,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2502 treesize of output 2451 [2023-08-27 07:56:29,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,456 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 07:56:29,540 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:56:29,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2308 treesize of output 2040 Received shutdown request... [2023-08-27 08:04:52,913 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-27 08:04:52,915 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 08:04:52,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 08:04:52,926 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 08:04:52,927 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 08:04:53,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 08:04:53,117 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 08:04:53,118 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 08:04:53,119 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 08:04:53,119 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:04:53,122 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 08:04:53,122 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 08:04:53,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 08:04:53 BasicIcfg [2023-08-27 08:04:53,124 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 08:04:53,124 INFO L158 Benchmark]: Toolchain (without parser) took 832837.64ms. Allocated memory was 339.7MB in the beginning and 8.4GB in the end (delta: 8.1GB). Free memory was 315.8MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-27 08:04:53,124 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 08:04:53,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.72ms. Allocated memory is still 339.7MB. Free memory was 315.3MB in the beginning and 303.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 08:04:53,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.74ms. Allocated memory is still 339.7MB. Free memory was 303.7MB in the beginning and 301.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:04:53,124 INFO L158 Benchmark]: Boogie Preprocessor took 32.13ms. Allocated memory is still 339.7MB. Free memory was 301.6MB in the beginning and 300.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 08:04:53,125 INFO L158 Benchmark]: RCFGBuilder took 451.62ms. Allocated memory is still 339.7MB. Free memory was 299.5MB in the beginning and 270.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 08:04:53,125 INFO L158 Benchmark]: TraceAbstraction took 832135.11ms. Allocated memory was 339.7MB in the beginning and 8.4GB in the end (delta: 8.1GB). Free memory was 269.6MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. [2023-08-27 08:04:53,125 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 169.72ms. Allocated memory is still 339.7MB. Free memory was 315.3MB in the beginning and 303.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.74ms. Allocated memory is still 339.7MB. Free memory was 303.7MB in the beginning and 301.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.13ms. Allocated memory is still 339.7MB. Free memory was 301.6MB in the beginning and 300.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 451.62ms. Allocated memory is still 339.7MB. Free memory was 299.5MB in the beginning and 270.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 832135.11ms. Allocated memory was 339.7MB in the beginning and 8.4GB in the end (delta: 8.1GB). Free memory was 269.6MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 176 PlacesBefore, 35 PlacesAfterwards, 184 TransitionsBefore, 33 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 8 FixpointIterations, 127 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 4 ConcurrentYvCompositions, 10 ChoiceCompositions, 195 TotalNumberOfCompositions, 1791 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1356, independent conditional: 0, independent unconditional: 1356, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 511, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 511, unknown conditional: 0, unknown unconditional: 511] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 31 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 10 for 60ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 211 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 832.1s, OverallIterations: 29, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 227.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 111 mSolverCounterUnknown, 3135 SdHoareTripleChecker+Valid, 17.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3135 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 16.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 930 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 423 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8418 IncrementalHoareTripleChecker+Invalid, 9882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 423 mSolverCounterUnsat, 11 mSDtfsCounter, 8418 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 964 GetRequests, 408 SyntacticMatches, 15 SemanticMatches, 541 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 6637 ImplicationChecksByTransitivity, 32.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38210occurred in iteration=27, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 744 NumberOfCodeBlocks, 722 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 970 ConstructedInterpolants, 58 QuantifiedInterpolants, 12596 SizeOfPredicates, 211 NumberOfNonLiveVariables, 4137 ConjunctsInSsa, 396 ConjunctsInUnsatCore, 62 InterpolantComputations, 14 PerfectInterpolantSequences, 255/512 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown